A game played with an OBLONG ball and, I don't know the f'n WIND, by the very definition is without question impacted by luck. Just because year over year it averages out and finds its level relative to a teams preparation, playstyle, and skill doesn't mean that the luck doesn't exist. Patently absurd statement when there's very few things in this universe that aren't impacted by probability (i.e. luck). Hell, your personality is more determined by luck than free will but football isn't?
I understand and agree on the underlying principle behind what you're saying but there's no reason to take it to an extreme or into some absolutist maxim.